SN74LVC573APWRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC573APWRG4 is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability. This component is designed for applications requiring transparent latch functionality in low-voltage CMOS logic systems. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional and electrical compatibility for ongoing production and maintenance requirements.

Substiute Parts

SN74LVC573APWRG4

Texas InstrumentsIn Stock: 2436SN74LVC573APWRG4 Datasheet

Current PartRFQ

SN74LVC573APWR

Texas InstrumentsIn Stock: 4858SN74LVC573APWR Datasheet

Parametric EquivalentRFQ

SN74LVC573APWT

Texas InstrumentsIn Stock: 1579SN74LVC573APWT Datasheet

Parametric EquivalentRFQ

74LVC573APW,118

Nexperia USA Inc.In Stock: 766074LVC573APW,118 Datasheet

MFR RecommendedRFQ

MC74LCX573DTG

onsemiIn Stock: 2994MC74LCX573DTG Datasheet

MFR RecommendedRFQ

MC74LCX573DTR2G

onsemiIn Stock: 3438MC74LCX573DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LVC573APWRG4 is determined by strict equivalence across the following critical parameters:

Functional Equivalence Requirements:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Package Type: 20-TSSOP

Electrical Compatibility Parameters:

• Supply Voltage Range: Must encompass or exceed 1.65V ~ 3.6V
• Output Current Capability: Minimum 24mA (High and Low)
• Propagation Delay: Maximum 2ns
• Operating Temperature Range: Must support -40°C minimum

Compliance & Environmental:

• RoHS3 Compliance required
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications) and Manufacturer-Recommended Equivalents (functionally compatible with extended or alternative electrical specifications).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitutes):

SN74LVC573APWR and SN74LVC573APWT are parametric equivalents of the SN74LVC573APWRG4, manufactured by Texas Instruments with identical electrical specifications. Both parts maintain the same voltage supply range (1.65V ~ 3.6V), propagation delay (2ns), output current capability (24mA), and operating temperature range (-40°C ~ 85°C). The primary distinction is packaging format: SN74LVC573APWR is supplied in Cut Tape & Digi-Reel format, while SN74LVC573APWT is supplied in Tape & Reel format. Both are currently in active production status with substantial inventory availability.

Manufacturer-Recommended Equivalents:

74LVC573APW,118 (Nexperia USA Inc.) is a manufacturer-recommended equivalent offering extended lower voltage operation (1.2V ~ 3.6V) and improved propagation delay (1.5ns) compared to the original part. Operating temperature range extends to 125°C. This part is suitable for applications requiring enhanced performance margins or extended temperature operation within the 1.65V ~ 3.6V window of the original specification.

MC74LCX573DTG and MC74LCX573DTR2G (onsemi) are manufacturer-recommended equivalents from the 74LCX series. Both parts operate across 2V ~ 3.6V supply range with 1.5ns propagation delay and extended operating temperature range (-55°C ~ 125°C). MC74LCX573DTG is supplied in Tube packaging, while MC74LCX573DTR2G is supplied in Tape & Reel format. These parts are suitable for applications requiring extended temperature operation or lower minimum supply voltage is not a constraint.

Selection Criteria:

For direct replacement in existing designs operating within 1.65V ~ 3.6V and -40°C ~ 85°C, select SN74LVC573APWR or SN74LVC573APWT based on packaging requirements. For new designs or applications requiring extended temperature operation or improved propagation delay, select 74LVC573APW,118 or onsemi equivalents. All substitute parts maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC573APWR directly replace SN74LVC573APWRG4 in existing designs?

A: Yes. SN74LVC573APWR is a parametric equivalent with identical electrical specifications, including voltage supply range (1.65V ~ 3.6V), propagation delay (2ns), output current (24mA), and operating temperature range (-40°C ~ 85°C). The only difference is packaging format (Cut Tape & Digi-Reel vs. Cut Tape & Digi-Reel). Pin configuration and functional behavior are identical.

Q: What is the difference between SN74LVC573APWR and SN74LVC573APWT?

A: Both are Texas Instruments parametric equivalents with identical electrical specifications. The difference is packaging format: SN74LVC573APWR is supplied in Cut Tape & Digi-Reel format, while SN74LVC573APWT is supplied in Tape & Reel format. Select based on your procurement and assembly process requirements.

Q: Can I use 74LVC573APW,118 (Nexperia) as a substitute?

A: Yes, with considerations. 74LVC573APW,118 is a manufacturer-recommended equivalent with identical functional specifications and package type. It offers extended lower voltage operation (1.2V minimum vs. 1.65V) and improved propagation delay (1.5ns vs. 2ns). Operating temperature extends to 125°C. It is suitable for designs operating within the original 1.65V ~ 3.6V specification and provides performance margin improvement.

Q: What are the differences between Texas Instruments and onsemi equivalents?

A: Texas Instruments 74LVC series parts (SN74LVC573APWR, SN74LVC573APWT) maintain the original 1.65V ~ 3.6V supply range and 2ns propagation delay. onsemi 74LCX series parts (MC74LCX573DTG, MC74LCX573DTR2G) operate across 2V ~ 3.6V with 1.5ns propagation delay and extended temperature range (-55°C ~ 125°C). Select based on your minimum supply voltage requirement and temperature operating range.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory status of the original SN74LVC573APWRG4.

Q: What packaging options are available for substitutes?

A: SN74LVC573APWR is available in Cut Tape & Digi-Reel format. SN74LVC573APWT is available in Tape & Reel format. 74LVC573APW,118 is available in Cut Tape & Digi-Reel format. MC74LCX573DTG is available in Tube format. MC74LCX573DTR2G is available in Tape & Reel format. Select based on your assembly process and procurement requirements.

Q: Can I mix different substitute parts in the same production run?

A: All listed parts are functionally and electrically compatible within their specified operating ranges. However, mixing different manufacturers or series in the same production run may introduce minor timing variations due to propagation delay differences (2ns vs. 1.5ns). Verify timing-critical circuit behavior if mixing parts.